<template>
  <el-container class="home-container">
    <!-- 头部区 -->
    <el-header>
      <div>
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logoout">退出</el-button>
    </el-header>
    <!-- 页面主题 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px' ">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区 -->
        <el-menu background-color="#333744" text-color="#fff"
          active-text-color="#409BFF" unique-opened :collapse='isCollapse'
          :collapse-transition='false' router :default-active='activePath'>
          <!-- 一级菜单 -->
          <el-submenu :index="item.id +''" v-for="item in menulist" :key='item.id'>
            <!-- 一级菜单模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+ subItem.path" 
            v-for="subItem in item.children" :key="subItem.id"
            @click="saveNavState('/'+ subItem.path)">
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>

          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容 -->
      <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  props: {},
  data() {
    return {
        // 左侧菜单数据
        menulist:[],
        iconsObj:{
            '125':'el-icon-s-custom',
            '103':'el-icon-coin',
            '101':'el-icon-shopping-cart-full',
            '102':'el-icon-document',
            '145':'el-icon-edit-outline',
        },
        // 是否折叠
        isCollapse:false,
        // 被激活的链接地址
        activePath:''
    };
  },
  created () {
      this.getMenuList()
      this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logoout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList(){
       const{data: res} = await this.$http.get('menus')
       if(res.meta.status !==200) return this.$message.error(res.meta.msg)
       this.menulist = res.data
       console.log(res);
    },
    // 点击按钮 切换菜单折叠、展开
    toggleCollapse(){
        this.isCollapse=!this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath =activePath
    }
  },
  components: {},
};
</script>

<style scoped lang="less">
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
}
.el-aside {
  background-color: #333744;
  .el-menu{
      border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24ox;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2rem;
    cursor: pointer;
}
</style>
